CN106054352B - Optical imaging system - Google Patents
Optical imaging system Download PDFInfo
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- CN106054352B CN106054352B CN201610149328.9A CN201610149328A CN106054352B CN 106054352 B CN106054352 B CN 106054352B CN 201610149328 A CN201610149328 A CN 201610149328A CN 106054352 B CN106054352 B CN 106054352B
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- 238000012634 optical imaging Methods 0.000 title claims abstract description 228
- 230000003287 optical effect Effects 0.000 claims abstract description 288
- 238000003384 imaging method Methods 0.000 claims abstract description 63
- 238000006073 displacement reaction Methods 0.000 claims description 55
- 230000000007 visual effect Effects 0.000 claims description 25
- 210000001747 pupil Anatomy 0.000 claims description 10
- 238000009738 saturating Methods 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 claims 1
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- 239000000463 material Substances 0.000 description 34
- 239000004033 plastic Substances 0.000 description 26
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- 238000004519 manufacturing process Methods 0.000 description 20
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/004—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having four lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
- G02B9/34—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having four components only
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Abstract
The invention discloses an optical imaging system which sequentially comprises a first lens, a second lens, a third lens and a fourth lens from an object side to an image side. The first lens element with positive refractive power has a convex object-side surface. The second lens element to the third lens element have refractive power, and both surfaces of the lens elements may be aspheric. The fourth lens element with negative refractive power has a concave image-side surface, wherein both surfaces of the fourth lens element are aspheric, and at least one surface of the fourth lens element has an inflection point. The lens elements with refractive power in the optical imaging system are the first lens element to the fourth lens element. When the specific conditions are met, the optical imaging device can have larger light receiving capacity and better optical path adjusting capacity so as to improve the imaging quality.
Description
Technical field
The invention relates to a kind of optical imaging systems, and in particular to a kind of light applied on electronic product
Learn imaging system.
Background technique
In recent years, with the rise of the portable electronic product with camera function, the demand of optical system is increasingly improved.
The photosensory assembly of general optical system is nothing more than being photosensitive coupling component (Charge Coupled Device；CCD) or complementary
Matal-oxide semiconductor member (Complementary Metal-Oxide SemiconduTPor Sensor；CMOS Sensor)
Two kinds, and progressing greatly with manufacture of semiconductor technology, so that the picture element size reduction of photosensory assembly, optical system is gradually drawn toward high
Plain field development, therefore the requirement to image quality also increasingly increases.
Tradition is equipped on the optical system on portable equipment, mostly uses based on two or three-chip type lens arrangement, however by
In portable equipment constantly towards promoting demand such as low-light to large aperture of picture element and terminal consumer and night shooting function or right
The Self-timer of for example preposition camera lens of the demand of wide viewing angle.The optical system for only designing large aperture, which often faces, generates more aberrations causes
Make periphery image quality with deterioration and manufacture the situation of difficulty, and the optical system for designing wide viewing angle can then face imaging
Aberration rate (distortion) improve, known optical imaging system has been unable to satisfy the photography requirement of higher order.
Therefore, how to effectively increase the light-inletting quantity of optical imaging system and increase the visual angle of optical imaging system, remove into one
Total picture element that step improves imaging can take into account the design of weighing and considering in order to uphold justice of micromation optical imaging system with quality simultaneously outside, become as a phase
When important subject under discussion.
Summary of the invention
The aspect of the embodiment of the present invention is directed to a kind of optical imaging system, can utilize refractive power, the convex surface of four lens
(object side that convex surface or concave surface of the present invention refer to each lens in principle or image side surface are in the geometry on optical axis with the combination of concave surface
Shape description), so effectively improve optical imaging system light-inletting quantity and increase optical imaging system visual angle, while improve at
The total picture element and quality of picture, to be applied on small-sized electronic product.
The term and its code name of the relevant lens parameter of the embodiment of the present invention arrange reference as follows, as subsequent descriptions in detail:
With length or the related lens parameter of height
The image height of optical imaging system is indicated with HOI；The height of optical imaging system is indicated with HOS；Optical imagery
The first lens object side to the distance between the 4th lens image side surface of system is indicated with InTL；4th lens of optical imaging system
Image side surface to the distance between imaging surface is indicated with InB；InTL+InB=HOS；The fixed diaphram (aperture) of optical imaging system is extremely
Distance between imaging surface is indicated with InS；First lens of optical imaging system between the second lens at a distance from (example indicated with IN12
Show)；First lens of optical imaging system indicate (illustration) in the thickness on optical axis with TP1.
Lens parameter related with material
The abbe number of first lens of optical imaging system indicates (illustration) with NA1；The laws of refraction of first lens is with Nd1
It indicates (illustration).
Lens parameter related with visual angle
Visual angle is indicated with AF；The half at visual angle is indicated with HAF；Chief ray angle is indicated with MRA.
Lens parameter related with entrance pupil out
The entrance pupil diameter of optical imaging system is indicated with HEP.
Parameter related with lens face shape deflection depth
4th lens object side is in the maximum effective radius position of the intersection point on optical axis to the 4th lens object side in optical axis
Horizontal displacement distance (illustration) is indicated with InRS41；4th lens image side surface is in the intersection point on optical axis to the 4th lens image side surface
Maximum effective radius position (illustration) is indicated with InRS42 in the horizontal displacement distance of optical axis.
Parameter related with lens face type
Critical point C refers on certain lenses surface, and in addition to the intersection point with optical axis, one is tangent with the perpendicular section of optical axis
Point.It holds, such as the critical point C31 of the third lens object side and the vertical range of optical axis are HVT31 (illustration), the third lens picture
The critical point C32 of side and the vertical range of optical axis are HVT32 (illustration), the critical point C41 and optical axis of the 4th lens object side
Vertical range be HVT41 (illustrations), the vertical range of the critical point C42 of the 4th lens image side surface and optical axis is HVT42 (example
Show).On 4th lens object side closest to the point of inflexion of optical axis be IF411, this sinkage SGI411, between the point and optical axis
Vertical range is HIF411 (illustration).On 4th lens image side surface closest to the point of inflexion of optical axis be IF421, the sinkage
SGI421 (illustration), the vertical range between the point and optical axis are HIF421 (illustration).Second close to light on 4th lens object side
The point of inflexion of axis is IF412, this sinkage SGI412 (illustration), and the vertical range between the point and optical axis is HIF412 (example
Show).On 4th lens image side surface second close to optical axis the point of inflexion be IF422, this sinkage SGI422 (illustrations), the point and
Vertical range between optical axis is HIF422 (illustration).
Parameter related with aberration
The optical distortion (Optical Distortion) of optical imaging system is indicated with ODT；Its TV distortion (TV
Distortion it) is indicated with TDT, and can further limit what description aberration between 50% to 100% visual field is imaged deviated
Degree；Spherical aberration offset amount is indicated with DFS；Comet aberration offset is indicated with DFC.
The present invention provides a kind of optical imaging system, and the object side of the 4th lens or image side surface are provided with the point of inflexion, can
The angle that each visual field is incident in the 4th lens is effectively adjusted, and is maked corrections for optical distortion and TV distortion.In addition, the 4th is saturating
The surface of mirror can have more preferably optical path adjusting ability, to promote image quality.
A kind of optical imaging system is provided according to the present invention, by object side to image side sequentially include the first lens, the second lens,
The third lens and the 4th lens.First lens have refracting power with positive refracting power and the 4th lens.4th lens
Object side surface and image side surface be all it is aspherical, the focal length of the optical imaging system is f, and the entrance pupil of the optical imaging system is straight
Diameter is HEP, and the half at the maximum visual angle of the optical imaging system is HAF, and the first lens object side to the imaging surface has one
Distance HOS meets following condition: 1.2≤f/HEP≤3.0；And 0.5≤HOS/f≤3.0.
Preferably, the optical imaging system in knot as when TV distortion be TDT, the optical imaging system in knot as when
Optical distortion be ODT, the half of the visible angle of the optical imaging system is HAF, meets following equation: 0deg < HAF
≦70deg；│ TDT │ < 60% and │ ODT │ < 50%.
Preferably, an at least surface for its individual lenses of the third lens and the 4th lens has at least one
The point of inflexion.
Preferably, any surface of the 4th lens all has at least one point of inflexion.
Preferably, an at least surface for its individual lenses of first lens and second lens has at least one
The point of inflexion.
Preferably, the vertical range between the point of inflexion and optical axis is HIF, meets following equation: 0mm < HIF≤5mm.
Preferably, the 4th lens are negative refracting power.
Preferably, the first lens object side to the 4th lens image side surface has a distance InTL, and under satisfaction
Column formula: 0.5≤InTL/HOS≤0.9.
Preferably, aperture is further included, there is a distance InS in aperture described on the optical axis to the imaging surface, it is described
Optical imaging system is equipped with image sensing component in the imaging surface, the effective sensing region diagonal line length of image sensing component
Half be HOI, meet following relationship: 0.5≤InS/HOS≤1.2；And 0 < HIF/HOI≤0.9.
A kind of optical imaging system is separately provided according to the present invention, by object side to image side sequentially include the first lens, second thoroughly
Mirror, the third lens and the 4th lens.First lens have positive refracting power, and object side and image side surface are all aspherical.Second
Lens have refracting power.The third lens have refracting power.4th lens have refracting power.4th lens have refracting power, object
Side and image side surface are all aspherical.The focal length of first lens to the 4th lens is respectively f1, f2, f3, f4, the optics at
As the focal length of system is f, the entrance pupil diameter of the optical imaging system is HEP, the one of the maximum visual angle of the optical imaging system
Half is HAF, and the first lens object side to the imaging surface has a distance HOS, the optical imaging system in knot as when optics
Distortion is ODT and TV distortion is TDT, meets following condition: 1.2≤f/HEP≤3.0；0.4≦│tan(HAF)│≦3.0；
0.5≦HOS/f≦3.0；│ TDT │ < 60%；And │ ODT │≤50%.
Preferably, an at least surface for its individual lenses of the third lens and the 4th lens has at least one
The point of inflexion.
Preferably, an at least surface for its individual lenses of first lens and second lens has at least one
The point of inflexion.
Preferably, the optical imaging system meets following equation: 0mm < HOS≤7mm.
Preferably, first lens are IN12 at a distance from optical axis between second lens, and are met following
Formula: 0 < IN12/f≤0.2.
Preferably, the third lens are IN34 at a distance from optical axis between the 4th lens, and are met following
Formula: 0 < IN34/f≤0.2.
Preferably, the third lens are in, with a thickness of TP3, and meeting following equation: 0 < TP3/f≤0.2 on optical axis.
Preferably, the third lens object side surface is in the intersection point on optical axis to the maximum of the third lens object side surface
Effective radius position in optical axis horizontal displacement distance be InRS31, the third lens image side surface in the intersection point on optical axis extremely
The maximum effective radius position on the third lens image side surface is InRS32 in the horizontal displacement distance of optical axis, and the described 4th thoroughly
Mirror object side surface is in the maximum effective radius position of the intersection point on optical axis to the 4th lens object side surface in the level of optical axis
Shift length is InRS41, the 4th lens image side surface in the intersection point on optical axis to the 4th lens image side surface most
Big effective radius position is InRS42 in the horizontal displacement distance of optical axis, meets following condition: 0 < (│ InRS31 │+│ InRS32
│+│InRS41│+│InRS42│)/InTL≦2。
Preferably, second lens and the third lens in the thickness on optical axis be respectively TP2 and TP3, it is described
Second lens are IN23 at a distance from optical axis between the third lens, meet following condition: 0.01 < IN23/ (TP2+
IN23+TP3)≦0.5。
Preferably, the focal length of the first lens to the 4th lens is respectively f1, f2, f3, f4, the optical imaging system
Meet following condition: │≤2 0 < │ f/f1；0<│f/f2│≦2；0<│f/f3│≦2；And │≤3 0 < │ f/f4.
A kind of optical imaging system is provided again according to the present invention, by object side to image side sequentially include the first lens, second thoroughly
Mirror, the third lens and the 4th lens.First lens have positive refracting power, and object side and image side surface are all aspherical.Second
Lens have negative refracting power.The third lens have refracting power.4th lens have refracting power, and a wherein at least surface has at least
One point of inflexion, object side and image side surface are all aspherical.The focal length of the optical imaging system is f, the optical imaging system
Entrance pupil diameter is HEP, and the half at the maximum visual angle of the optical imaging system is HAF, the first lens object side to the imaging
Face have a distance HOS, the optical imaging system in knot as when optical distortion be ODT and TV distortion be TDT, meet under
Column condition: 1.2≤f/HEP≤2.8；0.4≦│tan(HAF)│≦1.5；0.5≦HOS/f≦2.5；│ TDT │ < 1.5%；And │
ODT │≤2.5%.
Preferably, the vertical range between the point of inflexion and optical axis is HIF, meets following equation: 0mm < HIF≤5mm.
Preferably, of the focal length f of the optical imaging system and focal length fp per a piece of lens with positive refracting power
Other ratio f/fp is of PPR, the focal length f of the optical imaging system and the focal length fn per a piece of lens with negative refracting power
Other ratio f/fn is NPR, and the PPR summation of the lens of all positive refracting powers is Σ PPR, and the NPR of the lens of all negative refracting powers is total
With for Σ NPR, meet following condition: │≤4.5 0.5≤Σ PPR/ │ Σ NPR.
Preferably, first lens and the second lens are respectively TP1, TP2 in the thickness on optical axis, are met following
Condition: 0 < TP1/TP2≤10.
Preferably, the third lens and the 4th lens are respectively TP3 and TP4 in the thickness on optical axis, are met
Following condition: 0 < TP3/TP4≤10.
Preferably, aperture is further included, there is a distance InS in aperture described on the optical axis to the imaging surface, it is described
Optical imaging system is equipped with image sensing component and 8,000,000 pixels, the image sensing in the imaging surface and is at least arranged
The half of the effective sensing region diagonal line length of component is HOI, meets following relationship: 0.5≤InS/HOS≤1.2；And HOI >
2.3mm。
Aforementioned optical imaging system, which can be used to arrange in pairs or groups, is imaged on catercorner length as 1/1.2 English inch size image sense below
Component is surveyed, the size preferably of the image sensing component is 1/2.3 English inch, and the Pixel Dimensions of the image sensing component are less than 1.4
Micron (μm), preferably its Pixel Dimensions is less than 1.12 microns (μm), its Pixel Dimensions of the best are less than 0.9 micron (μm).This
Outside, which is applicable to the image sensing component that length-width ratio is 16:9.
Aforementioned optical imaging system be applicable to million or ten million pixel or more camera requirement (such as 4K2K or
UHD, QHD) and possess good image quality.
As │ f1 │ > f4, the system total height (HOS of optical imaging system；Height of Optic System) it can be with
It is appropriate to shorten to achieve the purpose that micromation.
As │ f2 │+│ f3 │ > │ f1 │+│ f4 │, by the second lens into the third lens an at least lens have it is weak just
Refracting power or weak negative refracting power.Alleged weak refracting power refers to that the absolute value of the focal length of certain lenses is greater than 10.As the present invention second
Lens at least lens into the third lens have weak positive refracting power, can effectively share the positive refracting power of the first lens and keep away
Exempt from unnecessary aberration to occur too early, if the second anti-lens at least lens into the third lens have weak negative refracting power,
The aberration of correcting system can then be finely tuned.
4th lens can have negative refracting power, and image side surface can be concave surface.Whereby, be conducive to shorten its back focal length to maintain
Miniaturization.In addition, an at least surface for the 4th lens can have an at least point of inflexion, it can effectively suppress off-axis field rays and enter
The angle penetrated, further can modified off-axis visual field aberration.
Detailed description of the invention
The above-mentioned and other feature of the present invention will be described in detail by referring to accompanying drawing.
Figure 1A is painted the schematic diagram of the optical imaging system of first embodiment of the invention；
Figure 1B is sequentially painted spherical aberration, astigmatism and the optics of the optical imaging system of first embodiment of the invention from left to right
The curve graph of distortion；
Fig. 1 C is painted the TV distortion curve of the optical imaging system of first embodiment of the invention；
Fig. 2A is painted the schematic diagram of the optical imaging system of second embodiment of the invention；
Fig. 2 B is sequentially painted spherical aberration, astigmatism and the optics of the optical imaging system of second embodiment of the invention from left to right
The curve graph of distortion；
Fig. 2 C is painted the TV distortion curve of the optical imaging system of second embodiment of the invention；
Fig. 3 A is painted the schematic diagram of the optical imaging system of third embodiment of the invention；
Fig. 3 B is sequentially painted spherical aberration, astigmatism and the optics of the optical imaging system of third embodiment of the invention from left to right
The curve graph of distortion；
Fig. 3 C is painted the TV distortion curve of the optical imaging system of third embodiment of the invention；
Fig. 4 A is painted the schematic diagram of the optical imaging system of fourth embodiment of the invention；
Fig. 4 B is sequentially painted spherical aberration, astigmatism and the optics of the optical imaging system of fourth embodiment of the invention from left to right
The curve graph of distortion；
Fig. 4 C is painted the TV distortion curve of the optical imaging system of fourth embodiment of the invention；
Fig. 5 A is painted the schematic diagram of the optical imaging system of fifth embodiment of the invention；
Fig. 5 B is sequentially painted spherical aberration, astigmatism and the optics of the optical imaging system of fifth embodiment of the invention from left to right
The curve graph of distortion；
Fig. 5 C is painted the TV distortion curve of the optical imaging system of fifth embodiment of the invention；
Fig. 6 A is painted the schematic diagram of the optical imaging system of sixth embodiment of the invention；
Fig. 6 B is sequentially painted spherical aberration, astigmatism and the optics of the optical imaging system of sixth embodiment of the invention from left to right
The curve graph of distortion；
Fig. 6 C is painted the TV distortion curve of the optical imaging system of sixth embodiment of the invention.
Description of symbols
Optical imaging system: 1,20,30,40,50,60
Aperture: 100,200,300,400,500,600
First lens: 110,210,310,410,510,610
Object side: 112,212,312,412,512,612
Image side surface: 114,214,314,414,514,614
Second lens: 120,220,320,420,520,620
Object side: 122,222,322,422,522,622
Image side surface: 124,224,324,424,524,624
The third lens: 130,230,330,430,530,630
Object side: 132,232,332,432,532,632
Image side surface: 134,234,334,434,534,634
4th lens: 140,240,340,440,540,640
Object side: 142,242,342,442,542,642
Image side surface: 144,244,344,444,544,644
Infrared filter: 170,270,370,470,570,670
Imaging surface: 180,280,380,480,580,680
Image sensing component: 190,290,390,490,590,690
The focal length of optical imaging system: f
The focal length of first lens: f1；The focal length of second lens: f2；The focal length of the third lens: f3；The focal length of 4th lens:
f4
The f-number of optical imaging system: f/HEP；Fno；F#
The half at the maximum visual angle of optical imaging system: HAF
The abbe number of first lens: NA1
The abbe number of second lens to the 4th lens: NA2, NA3, NA4
The radius of curvature of first lens object side and image side surface: R1, R2
The radius of curvature of second lens object side and image side surface: R3, R4
The radius of curvature of the third lens object side and image side surface: R5, R6
The radius of curvature of 4th lens object side and image side surface: R7, R8
First lens are in the thickness on optical axis: TP1
Second lens to the 4th lens are in the thickness on optical axis: TP2, TP3, TP4
The thickness summation of the lens of all tool refracting powers: Σ TP
First lens and the second lens are in the spacing distance on optical axis: IN12
Second lens and the third lens are in the spacing distance on optical axis: IN23
The third lens and the 4th lens are in the spacing distance on optical axis: IN34
The third lens object side is in the maximum effective radius position of the intersection point on optical axis to the third lens object side in optical axis
Horizontal displacement distance: InRS31
The third lens image side surface is in the maximum effective radius position of the intersection point on optical axis to the third lens image side surface in optical axis
Horizontal displacement distance: InRS32
4th lens object side is in the maximum effective radius position of the intersection point on optical axis to the 4th lens object side in optical axis
Horizontal displacement distance: InRS41
4th lens image side surface is in the maximum effective radius position of the intersection point on optical axis to the 4th lens image side surface in optical axis
Horizontal displacement distance: InRS42
Closest to the point of inflexion of optical axis on 4th lens object side: IF411；The sinkage: SGI411
Closest to the vertical range between the point of inflexion and optical axis of optical axis on 4th lens object side: HIF411
Closest to the point of inflexion of optical axis on 4th lens image side surface: IF421；The sinkage: SGI421
Closest to the vertical range between the point of inflexion and optical axis of optical axis on 4th lens image side surface: HIF421
On 4th lens object side second close to optical axis the point of inflexion: IF412；The sinkage: SGI412
4th lens object side second is close to the vertical range between the point of inflexion and optical axis of optical axis: HIF412
On 4th lens image side surface second close to optical axis the point of inflexion: IF422；The sinkage: SGI422
4th lens image side surface second is close to the vertical range between the point of inflexion and optical axis of optical axis: HIF422
The point of inflexion of the third close to optical axis on 4th lens object side: IF413；The sinkage: SGI413
4th lens object side third is close to the vertical range between the point of inflexion and optical axis of optical axis: HIF413
The point of inflexion of the third close to optical axis on 4th lens image side surface: IF423；The sinkage: SGI423
4th lens image side surface third is close to the vertical range between the point of inflexion and optical axis of optical axis: HIF423
On 4th lens object side the 4th close to optical axis the point of inflexion: IF414；The sinkage: SGI414
4th lens object side the 4th is close to the vertical range between the point of inflexion and optical axis of optical axis: HIF414
On 4th lens image side surface the 4th close to optical axis the point of inflexion: IF424；The sinkage: SGI424
4th lens image side surface the 4th is close to the vertical range between the point of inflexion and optical axis of optical axis: HIF424
The critical point of 4th lens object side: C41；The critical point of 4th lens image side surface: C42
The critical point of 4th lens object side and the horizontal displacement distance of optical axis: SGC41
The critical point of 4th lens image side surface and the horizontal displacement distance of optical axis: SGC42
The critical point of 4th lens object side and the vertical range of optical axis: HVT41
The critical point of 4th lens image side surface and the vertical range of optical axis: HVT42
System total height (the first lens object side to imaging surface is in the distance on optical axis): HOS
The catercorner length of image sensing component: Dg；Aperture to imaging surface distance: InS
The distance of first lens object side to the 4th lens image side surface: InTL
4th lens image side surface to the imaging surface distance: InB
The half (maximum image height) of the effective sensing region diagonal line length of image sensing component: HOI
Optical imaging system in knot as when TV distort (TV Distortion): TDT
Optical imaging system in knot as when optical distortion (Optical Distortion): ODT
Specific embodiment
A kind of optical imaging system sequentially includes the first lens, the second lens, third for having refracting power by object side to image side
Lens and the 4th lens.Optical imaging system more may include an image sensing component, be set to imaging surface.
Optical imaging system is designed using three operation wavelengths, respectively 486.1nm, 587.5nm, 656.2nm,
Middle 587.5nm be main reference wavelength and with 555nm be main extractive technique feature reference wavelength.
The focal length f of optical imaging system and per a piece of lens with positive refracting power focal length fp ratio PPR, optics at
The ratio NPR of focal length f as the system and focal length fn per a piece of lens with negative refracting power, the lens of all positive refracting powers
PPR summation is Σ PPR, and the NPR summation of the lens of all negative refracting powers is Σ NPR, facilitates to control when meeting following condition
The total refracting power and total length of optical imaging system: │≤4.5 0.5≤Σ PPR/ │ Σ NPR, preferably, following item can be met
Part: │≤3.5 1≤Σ PPR/ │ Σ NPR.
The system altitude of optical imaging system be HOS, when HOS/f ratio level off to 1 when, be beneficial to production micromation and
The optical imaging system of superelevation picture element can be imaged.
The summation of the focal length fp per a piece of lens with positive refracting power of optical imaging system is Σ PP, is had per a piece of
The focal length summation of the lens of negative refracting power is Σ NP, and a kind of embodiment of optical imaging system of the invention meets following
Condition: PP≤200 0 < Σ；And PP≤0.85 f1/ Σ.Preferably, following condition can be met: PP≤150 0 < Σ；And 0.01
≦f1/ΣPP≦0.65.Whereby, facilitate the focusing capability of control optical imaging system, and appropriate distribution system is just in the wrong
Power is rolled over to inhibit significant aberration to generate too early.
First lens can have positive refracting power, and object side can be convex surface.Whereby, can the first lens of appropriate adjustment just bend
Power intensity is rolled over, the total length for shortening optical imaging system is facilitated.
Second lens can have negative refracting power.Whereby, the aberration that first lens that can make corrections generate.
The third lens can have positive refracting power.Whereby, the positive refracting power of the first lens can be shared.
4th lens can have negative refracting power, and image side surface can be concave surface.Whereby, be conducive to shorten its back focal length to maintain
Miniaturization.In addition, an at least surface for the 4th lens can have an at least point of inflexion, it can effectively suppress off-axis field rays and enter
The angle penetrated, further can modified off-axis visual field aberration.Preferably, its object side and image side surface all have an at least contrary flexure
Point.
Optical imaging system can further include an image sensing component, be set to imaging surface.Image sensing component effective feeling
The half (the as image height of optical imaging system or maximum image height) for surveying region diagonal line length is HOI, the first lens object
Side is HOS in the distance on optical axis to imaging surface, meets following condition: HOS/HOI≤3；And 0.5≤HOS/f≤
3.0.Preferably, following condition: 1≤HOS/HOI≤2.5 can be met；And 1≤HOS/f≤2.Whereby, optical imagery can be maintained
The miniaturization of system, to be equipped on frivolous portable electronic product.
In addition, an at least aperture settable on demand is helped in optical imaging system of the invention with reducing stray light
In the promotion quality of image.
In optical imaging system of the invention, aperture configuration can for preposition aperture or in set aperture, wherein preposition aperture anticipate
I.e. aperture is set between object and the first lens, in set aperture then and indicate that aperture is set between the first lens and imaging surface.If
Aperture is preposition aperture, and the emergent pupil of optical imaging system and imaging surface can be made to generate longer distance and accommodate more optics groups
Part, and the efficiency that image sensing component receives image can be increased；Aperture is set if in, is facilitated the field angle of expansion system, is made
Optical imaging system has the advantage of wide-angle lens.Aforementioned aperture to the distance between imaging surface is InS, meets following condition:
0.5≦InS/HOS≦1.2.Preferably, can meet following condition: 0.8≤InS/HOS≤1 whereby, can combine maintenance light
It learns the miniaturization of imaging system and has the characteristic of wide-angle.
In optical imaging system of the invention, the first lens object side to the distance between the 4th lens image side surface is InTL,
In the thickness summation Σ TP of the lens of tool refracting powers all on optical axis, meet following condition: 0.45≤Σ TP/InTL≤
0.95.Preferably, following condition can be met: TP/InTL≤0.9 0.6≤Σ.Whereby, when pair that can combine system imaging
Than degree and the yield of lens manufacture and back focal length appropriate is provided to accommodate other assemblies.
The radius of curvature of first lens object side is R1, and the radius of curvature of the first lens image side surface is R2, is met following
Condition: │≤0.5 0.01≤│ R1/R2.Whereby, the first lens has appropriate positive refracting power intensity, and spherical aberration increase is avoided to overrun.
Preferably, following condition can be met: │≤0.25 0.01≤│ R1/R2.
The radius of curvature of 4th lens object side is R7, and the radius of curvature of the 4th lens image side surface is R8, is met following
Condition: -200 < (R7-R8)/(R7+R8) < 30.Whereby, be conducive to correct astigmatism caused by optical imaging system.
First lens and the second lens are IN12 in the spacing distance on optical axis, meet following condition: 0 < IN12/f≤
0.2.Preferably, following condition: 0.01≤IN12/f≤0.20 can be met.Whereby, facilitate the color difference of improvement lens to be promoted
Its performance.
Second lens and the third lens are IN23 in the spacing distance on optical axis, meet following condition: 0 < IN23/f≤
0.25.Preferably, following condition: 0.01≤IN23/f≤0.20 can be met.Whereby, facilitate the performance of improvement lens.
The third lens and the 4th lens are IN34 in the spacing distance on optical axis, meet following condition: 0 < IN34/f≤
0.2.Preferably, following condition: 0.001≤IN34/f≤0.20 can be met.Whereby, facilitate the performance of improvement lens.
First lens and the second lens are respectively TP1 and TP2 in the thickness on optical axis, meet following condition: 1≤
(TP1+IN12)/TP2≦10.Whereby, facilitate to control the susceptibility of optical imaging system manufacture and promote its performance.
The third lens and the 4th lens are respectively TP3 and TP4 in the thickness on optical axis, aforementioned two lens on optical axis it
Spacing distance is IN34, meets following condition: 0.2≤(TP4+IN34)/TP4≤3.Whereby, facilitate to control optical imagery
The susceptibility of system manufacture simultaneously reduces system total height.
Second lens and the third lens are IN23 in the spacing distance on optical axis, and the first lens to the 4th lens are on optical axis
Summation distance be Σ TP, meet following condition: ()≤0.5 TP2+IN23+TP3 0.01≤IN23/.Preferably, can meet
Following condition: ()≤0.4 TP2+IN23+TP3 0.05≤IN23/.It helps whereby and corrects incident light traveling process institute a little layer by layer
The aberration of generation simultaneously reduces system total height.
First lens object side surface of optical imaging system of the present invention is in the intersection point on optical axis to the first lens object side surface
Maximum effective radius position in optical axis horizontal displacement distance be InRS11 (if horizontal displacement, towards image side, InRS11 is positive
Value；If horizontal displacement, towards object side, InRS11 is negative value), the first lens image side surface is in the intersection point on optical axis to the first lens
The maximum effective radius position on image side surface is InRS12 in the horizontal displacement distance of optical axis, and the first lens are in the thickness on optical axis
For TP1, meet following condition: 0mm < │ InRS11 │+│ InRS12 │≤2mm；And 1.0≤(│ InRS11 │+TP1+ │
InRS12│)/TP1≦3.Whereby, it can control the ratio (thickness between the center thickness and its effective radius thickness of the first lens
Than), and then promote the yield in lens manufacture.
Second lens object side surface in the maximum effective radius position of the intersection point on optical axis to the second lens object side surface in
The horizontal displacement distance of optical axis is InRS21, and the second lens image side surface is in the intersection point on optical axis to the second lens image side surface
Maximum effective radius position is InRS22 in the horizontal displacement distance of optical axis, and the second lens on optical axis in, with a thickness of TP2, expiring
Foot column condition: 0mm < │ InRS21 │+│ InRS22 │≤2mm；And 1.0≤(│ InRS21 │+TP2+ │ InRS22 │)/TP2≤
5.Whereby, it can control the ratio (thickness ratio) between the center thickness and its effective radius thickness of the second lens, and then promote this thoroughly
Yield in mirror manufacture.
The third lens object side surface in the maximum effective radius position of the intersection point on optical axis to the third lens object side surface in
The horizontal displacement distance of optical axis is InRS31, and the third lens image side surface is in the intersection point on optical axis to the third lens image side surface
Maximum effective radius position is InRS32 in the horizontal displacement distance of optical axis, and the third lens on optical axis in, with a thickness of TP3, expiring
Foot column condition: 0mm < │ InRS31 │+│ InRS32 │≤2mm；And 1.0≤(│ InRS31 │+TP3+ │ InRS32 │)/TP3≤
10.Whereby, it can control the ratio (thickness ratio) between the center thickness and its effective radius thickness of the third lens, and then promote this thoroughly
Yield in mirror manufacture.
4th lens object side surface in the maximum effective radius position of the intersection point on optical axis to the 4th lens object side surface in
The horizontal displacement distance of optical axis is InRS41, and the 4th lens image side surface is in the intersection point on optical axis to the 4th lens image side surface
Maximum effective radius position is InRS42 in the horizontal displacement distance of optical axis, and the 4th lens on optical axis in, with a thickness of TP4, expiring
Foot column condition: 0mm < │ InRS41 │+│ InRS42 │≤5mm；And 1.0≤(│ InRS41 │+TP4+ │ InRS42 │)/TP4≤
10.Whereby, it can control the ratio (thickness ratio) between the center thickness and its effective radius thickness of the 4th lens, and then promote this thoroughly
Yield in mirror manufacture.
Its other object side surface of lens of all tool refracting powers is in the intersection point on optical axis to the lens other object side table
The maximum effective radius position in face is InRSO, that is, InRSO=│ in the absolute value summation of the horizontal displacement distance of optical axis
InRS11│+│InRS21│+│InRS31│+│InRS41│.Its other image side surface of lens of all tool refracting powers is on optical axis
Intersection point to the lens other image side surface maximum effective radius position it is total in the absolute value of the horizontal displacement distance of optical axis
With for InRSI, that is, InRSI=│ InRS12 │+│ InRS22 │+│ InRS32 │+│ InRS42 │.Optical imaging system of the invention
In, any surface of the lens of all tool refracting powers is in the maximum effective radius position of the intersection point on optical axis to the surface in optical axis
Horizontal displacement distance absolute value summation be Σ │ InRS │=InRSO+InRSI, meet following condition: 0 < Σ │ InRS │
≦15mm.Whereby, can effective lifting system modified off-axis visual field aberration ability.
Optical imaging system of the invention its meet following condition: │/InTL≤3 0 < Σ │ InRS；And 0 < Σ │ InRS │/
HOS≤2 can combine the ability of reduction system total height and effective lifting system modified off-axis visual field aberration whereby.
Optical imaging system of the invention its meet following condition: 0 < │ InRS31 │+│ InRS32 │+│ InRS41 │+│
InRS42│≦8mm；0<(│InRS31│+│InRS32│+│InRS41│+│InRS42│)/InTL≦2；And 0 < (│ InRS31 │+
│ InRS32 │+│ InRS41 │+│ InRS42 │)/HOS≤2, whereby, can combine promoted closest to forming sheet two lens systems
The ability of the yield and effective lifting system modified off-axis visual field aberration made.
The critical point of the third lens object side and the vertical range of optical axis are HVT31, the critical point of the third lens image side surface
Vertical range with optical axis is HVT32, meets following condition: HVT31≤0mm；HVT32≧0mm.Whereby, it can effectively correct
The aberration of off-axis visual field.
The critical point of 4th lens object side and the vertical range of optical axis are HVT41, the critical point of the 4th lens image side surface
Vertical range with optical axis is HVT42, meets following condition: HVT41≤0；HVT42≧0.It whereby, can effective modified off-axis
The aberration of visual field.
Optical imaging system of the invention its meet following condition: 0.2≤HVT42/HOI≤0.9.Preferably, can meet
Following condition: 0.3≤HVT42/HOI≤0.8.Whereby, facilitate the lens error correction of the peripheral vision of optical imaging system.
Optical imaging system of the invention its meet following condition: 0≤HVT42/HOS≤0.5.Preferably, under can meeting
Column condition: 0.2≤HVT42/HOS≤0.45.Whereby, facilitate the lens error correction of the peripheral vision of optical imaging system.
A kind of embodiment of optical imaging system of the invention, can be by with high abbe number and low abbe number
Lens are staggered, and help the amendment of optical imaging system color difference.
Above-mentioned aspherical equation are as follows:
Z=ch2/[1+[1-(k+1)c2h2]0.5]+A4h4+A6h6+A8h8+A10h10+A12h12+A14h14+A16h16+
A18h18+A20h20+…(1)
Wherein, z is along optical axis direction in the positional value that be highly the position of h make to refer to surface vertices, and k is conical surface system
Number, c is the inverse of radius of curvature, and A4, A6, A8, A10, A12, A14, A16, A18 and A20 are order aspherical coefficients.
In optical imaging system provided by the invention, the material of lens can be plastics or glass.When lens material be plastics,
Production cost and weight can be effectively reduced.The another material for working as lens is glass, then can control fuel factor and increase optics
The design space of imaging system refracting power configuration.In addition, in optical imaging system the object side of the first lens to the 4th lens and
Image side surface can get more control variable, in addition to cut down aberration, compared to traditional glass lens to be aspherical
The number used using can even reduce lens, therefore the total height of optical imaging system of the present invention can be effectively reduced.
Furthermore in optical imaging system provided by the invention, if lens surface is convex surface, then it represents that lens surface is in dipped beam
It is convex surface at axis；If lens surface is concave surface, then it represents that lens surface is concave surface at dipped beam axis.
In addition, an at least light bar settable on demand is helped in optical imaging system of the invention with reducing stray light
In the promotion quality of image.
The more visual demand of optical imaging system of the invention is applied in the optical system of mobile focusing, and has both excellent picture
The characteristic of difference amendment and good image quality, to expand application.
According to above embodiment, specific embodiment set forth below simultaneously cooperates schema to be described in detail.
First embodiment
Figure 1A and Figure 1B is please referred to, wherein Figure 1A is painted a kind of optical imaging system according to first embodiment of the invention
Schematic diagram, Figure 1B are sequentially spherical aberration, astigmatism and the optical distortion curve graph of the optical imaging system of first embodiment from left to right.
Fig. 1 C is the TV distortion curve of the optical imaging system of first embodiment.By Figure 1A it is found that optical imaging system 10 is by object side
It sequentially include aperture 100, the first lens 110, the second lens 120, the third lens 130, the 4th lens 140, infrared ray to image side
Optical filter 170, imaging surface 180 and image sensing component 190.
First lens 110 have positive refracting power, and are plastic material, and object side 112 is convex surface, and image side surface 114 is
Concave surface, and be all aspherical, and its object side 112 and image side surface 114 all have a point of inflexion.First lens object side is in light
Intersection point on axis to horizontal displacement distance parallel with optical axis between the point of inflexion of the first nearest optical axis in lens object side with
SGI111 indicate, the first lens image side surface between the point of inflexion of the intersection point on optical axis to the first nearest optical axis of lens image side surface with
The parallel horizontal displacement distance of optical axis is indicated with SGI121, meets following condition: SGI111=0.2008mm；SGI121=
0.0113mm；│ SGI111 │/(│ SGI111 │+TP1)=0.3018；│ SGI121 │/(│ SGI121 │+TP1)=0.0238.
First lens object side is in the intersection point on optical axis between the point of inflexion and optical axis of the first nearest optical axis in lens object side
Vertical range indicate that the first lens image side surface is in the intersection point on optical axis to the first nearest optical axis of lens image side surface with HIF111
Vertical range between the point of inflexion and optical axis is indicated with HIF121, meets following condition: HIF111=0.7488mm；HIF121=
0.4451mm；HIF111/HOI=0.2552；HIF121/HOI=0.1517.
Second lens 120 have positive refracting power, and are plastic material, and object side 122 is concave surface, and image side surface 124 is
Convex surface, and be all aspherical, and its object side 122 has a point of inflexion.Second lens object side is in the intersection point on optical axis to
The horizontal displacement distance parallel with optical axis is indicated between the point of inflexion of the two nearest optical axises in lens object side with SGI211, the second lens
Image side surface is in the intersection point on optical axis to horizontal displacement parallel with optical axis between the point of inflexion of the second nearest optical axis of lens image side surface
Distance is indicated with SGI221, meets following condition: SGI211=-0.1791mm；│ SGI211 │/(│ SGI211 │+TP2)=
0.3109。
Second lens object side is in the intersection point on optical axis between the point of inflexion and optical axis of the second nearest optical axis in lens object side
Vertical range indicate that the second lens image side surface is in the intersection point on optical axis to the second nearest optical axis of lens image side surface with HIF211
Vertical range between the point of inflexion and optical axis is indicated with HIF221, meets following condition: HIF211=0.8147mm；HIF221=
0.1856mm；HIF211/HOI=0.2777；HIF221/HOI=0.063258.
The third lens 130 have negative refracting power, and are plastic material, and object side 132 is concave surface, and image side surface 134 is
Convex surface, and be all aspherical, and its image side surface 134 has a point of inflexion.The third lens object side is in the intersection point on optical axis to
The horizontal displacement distance parallel with optical axis is indicated between the point of inflexion of the three nearest optical axises in lens object side with SGI311, the third lens
Image side surface is in the intersection point on optical axis to horizontal displacement parallel with optical axis between the point of inflexion of the nearest optical axis of the third lens image side surface
Distance is indicated with SGI321, meets following condition: SGI321=-0.1647mm；│ SGI321 │/(│ SGI321 │+TP3)=
0.1884。
Vertical range between the point of inflexion and optical axis of the nearest optical axis in the third lens object side indicates with HIF311, the third lens
Image side surface in the intersection point on optical axis to the vertical range between the point of inflexion and optical axis of the nearest optical axis of the third lens image side surface with
HIF321 is indicated, meets following condition: HIF311=0.1089mm；HIF321=0.7269mm；HIF311/HOI=
0.037117；HIF321/HOI=0.2477.
4th lens 140 have negative refracting power, and are plastic material, and object side 142 is convex surface, and image side surface 144 is
Concave surface, and be all aspherical, and its object side 142 has a point of inflexion with two points of inflexion and image side surface 144.4th lens
Object side is in the intersection point on optical axis to horizontal displacement parallel with optical axis between the point of inflexion of the 4th nearest optical axis in lens object side
Distance indicates that the 4th lens image side surface is in the intersection point on optical axis to the point of inflexion of the 4th nearest optical axis of lens image side surface with SGI411
Between the horizontal displacement distance parallel with optical axis indicated with SGI421, meet following condition: SGI411=0.0137mm；
SGI421=0.0922mm；│ SGI411 │/(│ SGI411 │+TP4)=0.0155；│ SGI421 │/(│ SGI421 │+TP4)=
0.0956。
4th lens object side is in the intersection point on optical axis to the 4th lens object side second close between the point of inflexion of optical axis
The horizontal displacement distance parallel with optical axis is indicated with SGI412, meets following condition: SGI412=-0.1518mm；│SGI412
│/(│ SGI412 │+TP4)=0.1482.
Vertical range between the point of inflexion and optical axis of the 4th nearest optical axis in lens object side indicates with HIF411, the 4th lens
Vertical range between the point of inflexion and optical axis of the nearest optical axis of image side surface is indicated with HIF421, meets following condition: HIF411=
0.2890mm；HIF421=0.5794mm；HIF411/HOI=0.0985；HIF421/HOI=0.1975.
Vertical range between the point of inflexion and optical axis of 4th lens object side the second dipped beam axis is indicated with HIF412, is met
Following condition: HIF412=1.3328mm；HIF412/HOI=0.4543.
Infrared filter 170 is glass material, is set between the 4th lens 140 and imaging surface 180 and does not influence light
Learn the focal length of imaging system.
In the optical imaging system of first embodiment, the focal length of optical imaging system is f, the entrance pupil of optical imaging system
Diameter is HEP, and the half at maximum visual angle is HAF in optical imaging system, and numerical value is as follows: f=3.4375mm；F/HEP=
2.23；And HAF=39.69 degree and tan (HAF)=0.8299.
In the optical imaging system of first embodiment, the focal length of the first lens 110 is f1, and the focal length of the 4th lens 140 is
F4 meets following condition: f1=3.2736mm；│=1.0501 │ f/f1；F4=-8.3381mm；And │ f1/f4 │=
0.3926。
In the optical imaging system of first embodiment, the focal length of the second lens 120 to the third lens 130 is respectively f2, f3,
It meets following condition: │ f2 │+│ f3 │=10.0976mm；│ f1 │+│ f4 │=11.6116mm and │ f2 │+│ f3 │ < │ f1 │+│
f4│。
The focal length f of optical imaging system and per a piece of lens with positive refracting power focal length fp ratio PPR, optics at
The ratio NPR of focal length f as the system and focal length fn per a piece of lens with negative refracting power, the optical imagery of first embodiment
In system, the PPR summation of the lens of all positive refracting powers is │=1.95585 Σ PPR=│ f/f1 │+│ f/f2, all negative flexions
The NPR summation of the lens of power is │=2.04224 Σ NPR=│ f/f3 │+│ f/f4 │=0.95770, Σ PPR/ │ Σ NPR.Simultaneously
Also meet following condition: │=1.05009 │ f/f1；│=0.90576 │ f/f2；│=0.54543 │ f/f3；│ f/f4 │=
0.41227。
In the optical imaging system of first embodiment, between 112 to the 4th lens image side surface 144 of the first lens object side away from
From for InTL, the first lens object side 112 to the distance between imaging surface 180 is HOS, aperture 100 to the distance between imaging surface 180
For InS, the half of the effective sensing region diagonal line length of image sensing component 190 is HOI, the 4th lens image side surface 144 to imaging
Distance between face 180 is InB, meets following condition: InTL+InB=HOS；HOS=4.4250mm；HOI=2.9340mm；
HOS/HOI=1.5082；HOS/f=1.2873；InTL/HOS=0.7191；InS=4.2128mm；And InS/HOS=
0.95204。
In the optical imaging system of first embodiment, on optical axis it is all tool refracting powers lens thickness summation be Σ
TP meets following condition: Σ TP=2.4437mm；And Σ TP/InTL=0.76793.Whereby, when system can be combined
The yield of contrast and the lens manufacture of imaging simultaneously provides back focal length appropriate to accommodate other assemblies.
In the optical imaging system of first embodiment, the radius of curvature of the first lens object side 112 is R1, the first lens picture
The radius of curvature of side 114 is R2, meets following condition: │=0.1853 │ R1/R2.Whereby, the first lens has suitably
Positive refracting power intensity, avoids spherical aberration increase from overrunning.
In the optical imaging system of first embodiment, the radius of curvature of the 4th lens object side 142 is R7, the 4th lens picture
The radius of curvature of side 144 is R8, meets following condition: (R7-R8)/(R7+R8)=0.2756.Whereby, be conducive to correct
Astigmatism caused by optical imaging system.
In the optical imaging system of first embodiment, individual focal lengths of the first lens 110 and the second lens 120 are respectively
The focal length summation of f1, f2, the lens of all positive refracting powers of tool are Σ PP, meet following condition: Σ PP=f1+f2=
7.0688mm；And f1/ (Σ PP)=0.4631.Whereby, facilitate suitably distribute the first lens 110 positive refracting power to other
Positive lens, to inhibit the generation of the significant aberration of incident ray traveling process.
In the optical imaging system of first embodiment, individual focal lengths of the third lens 130 and the 4th lens 140 are respectively f3
And f4, the focal length summation of the lens of all negative refracting powers of tool is Σ NP, meets following condition: Σ NP=f3+f4=-
14.6405mm；And f4/ (Σ NP)=0.5695.Whereby, the negative refracting power for facilitating suitably to distribute the 4th lens is negative to other
Lens, to inhibit the generation of the significant aberration of incident ray traveling process.
In the optical imaging system of first embodiment, the first lens 110 and the second lens 120 are in the spacing distance on optical axis
For IN12, meet following condition: IN12=0.3817mm；IN12/f=0.11105.Whereby, facilitate the color of improvement lens
Difference is to promote its performance.
In the optical imaging system of first embodiment, the second lens 120 are with the third lens 130 in the spacing distance on optical axis
For IN23, meet following condition: IN23=0.0704mm；IN23/f=0.02048.Whereby, facilitate the color of improvement lens
Difference is to promote its performance.
In the optical imaging system of first embodiment, the third lens 130 and the 4th lens 140 are in the spacing distance on optical axis
For IN34, meet following condition: IN34=0.2863mm；IN34/f=0.08330.Whereby, facilitate the color of improvement lens
Difference is to promote its performance.
In the optical imaging system of first embodiment, the first lens 110 and the second lens 120 are distinguished in the thickness on optical axis
For TP1 and TP2, meet following condition: TP1=0.46442mm；TP2=0.39686mm；TP1/TP2=1.17023 with
And (TP1+IN12)/TP2=2.13213.Whereby, facilitate to control the susceptibility of optical imaging system manufacture and promote its property
Energy.
In the optical imaging system of first embodiment, the third lens 130 and the 4th lens 140 are distinguished in the thickness on optical axis
For TP3 and TP4, aforementioned two lens are IN34 in the spacing distance on optical axis, meet following condition: TP3=
0.70989mm；TP4=0.87253mm；TP3/f=0.20651；TP3/TP4=0.81359 and (TP4+IN34)/TP3=
1.63248.Whereby, facilitate to control the susceptibility of optical imaging system manufacture and reduce system total height.
In the optical imaging system of first embodiment, meet following condition: IN23/ (TP2+IN23+TP3)=
0.05980.It helps whereby and corrects aberration caused by incident light traveling process a little layer by layer and reduce system total height.
In the optical imaging system of first embodiment, the first lens object side surface 112 in the intersection point on optical axis to first thoroughly
The maximum effective radius position of mirror object side surface 112 is InRS11, the first lens image side surface in the horizontal displacement distance of optical axis
114 in the maximum effective radius position of the intersection point on optical axis to the first lens image side surface 114 in the horizontal displacement distance of optical axis
For InRS12, the first lens 110 are in, with a thickness of TP1, meeting following condition: InRS11=-0.00165mm on optical axis；
InRS12=-0.19364mm；TP1=0.46442mm and (│ InRS11 │+TP1+ │ InRS12 │)/TP1=1.4605.By
This, can control the ratio (thickness ratio) between the center thickness and its effective radius thickness of the first lens 110, and then promote the lens
Yield in manufacture.
Second lens object side surface 122 is in the intersection point on optical axis to the maximum effective radius of the second lens object side surface 122
Position is InRS21 in the horizontal displacement distance of optical axis, and the second lens image side surface 124 is in the intersection point on optical axis to the second lens
The maximum effective radius position on image side surface 124 is InRS22 in the horizontal displacement distance of optical axis, and the second lens 120 are on optical axis
With a thickness of TP2, meet following condition: InRS21=-0.19364mm；InRS22=-0.39073mm；TP2=
0.39686mm and (│ InRS21 │+TP2+ │ InRS22 │)/TP2=2.4725.Whereby, it can control the center of the second lens 120
Ratio (thickness ratio) between thickness and its effective radius thickness, and then promote the yield in lens manufacture.
The third lens object side surface 132 is in the intersection point on optical axis to the maximum effective radius of the third lens object side surface 132
Position is InRS31 in the horizontal displacement distance of optical axis, and the third lens image side surface 134 is in the intersection point on optical axis to the third lens
The maximum effective radius position on image side surface 134 is InRS32 in the horizontal displacement distance of optical axis, and the third lens 130 are on optical axis
With a thickness of TP3, meet following condition: InRS31=-0.38005mm；InRS32=-0.26306mm；TP3=
0.70989mm and (│ InRS31 │+TP3+ │ InRS32 │)/TP3=1.9059.Whereby, it can control the center of the third lens 130
Ratio (thickness ratio) between thickness and its effective radius thickness, and then promote the yield in lens manufacture.
4th lens object side surface 142 is in the intersection point on optical axis to the maximum effective radius of the 4th lens object side surface 142
Position is InRS41 in the horizontal displacement distance of optical axis, and the 4th lens image side surface 144 is in the intersection point on optical axis to the 4th lens
The maximum effective radius position on image side surface 144 is InRS42 in the horizontal displacement distance of optical axis, and the 4th lens 140 are on optical axis
With a thickness of TP4, meet following condition: InRS41=-0.23761mm；InRS42=-0.20206mm；TP4=
0.87253mm and (│ InRS41 │+TP4+ │ InRS42 │)/TP4=1.5039.Whereby, it can control the center of the 4th lens 140
Ratio (thickness ratio) between thickness and its effective radius thickness, and then promote the yield in lens manufacture.
In the optical imaging system of first embodiment, its other object side surface of lens of all tool refracting powers is on optical axis
Intersection point to the lens other object side surface maximum effective radius position it is total in the absolute value of the horizontal displacement distance of optical axis
With for InRSO, that is, InRSO=│ InRS11 │+│ InRS21 │+│ InRS31 │+│ InRS41 │.It is all tool refracting powers lens its
A other image side surface is in the maximum effective radius position of the intersection point on optical axis to the other image side surface of the lens in optical axis
The absolute value summation of horizontal displacement distance is InRSI, that is, InRSI=│ InRS12 │+│ InRS22 │+│ InRS32 │+│ InRS42
│.In optical imaging system of the invention, any surface of the lens of all tool refracting powers is in the intersection point on optical axis to the surface
Maximum effective radius position is Σ │ InRS │=InRSO+InRSI in the summation of the absolute value of the horizontal displacement distance of optical axis,
Meet following condition: InRSO=0.15888mm；InRSI=0.27211mm；Σ │ InRS │=0.43099mm.Whereby, can have
Imitate the ability of lifting system modified off-axis visual field aberration.
The optical imaging system of first embodiment meets following condition: Σ │ InRS │/InTL=0.59111；And Σ │
InRS │/HOS=0.42509 can combine reduction system total height and effective lifting system modified off-axis visual field whereby
The ability of aberration.
The optical imaging system of first embodiment meets following condition: │ InRS31 │+│ InRS32 │+│ InRS41 │+│
InRS42 │=1.08279mm；(│ InRS31 │+│ InRS32 │+│ InRS41 │+│ InRS42 │)/InTL=0.59111；And (│
InRS31 │+│ InRS32 │+│ InRS41 │+│ InRS42 │)/HOS=0.42509, whereby, can combine promotion closest at
The ability of yield and effective lifting system modified off-axis visual field aberration in the two lens manufacture of photo.
Second lens and the third lens be IN23, the third lens and the 4th lens at a distance from optical axis on optical axis away from
From for IN34, meet following condition: (│ InRS22 │+│ InRS31 │)/IN23=10.9489；And (│ InRS32 │+│
InRS41 │)/IN34=1.7485.Whereby, be conducive to the adjustment capability of lifting system optical path difference, and effectively maintain its miniaturization.
In the optical imaging system of first embodiment, the 4th lens object side 142 is in the intersection point on optical axis to the 4th lens
The maximum effective radius position of object side 142 is InRS41 in the horizontal displacement distance of optical axis, and the 4th lens image side surface 144 is in light
Intersection point on axis to the maximum effective radius position of the 4th lens image side surface 144 in the horizontal displacement distance of optical axis be InRS42,
4th lens 140 are in, with a thickness of TP4, meeting following condition: InRS41=-0.23761mm on optical axis；InRS42=-
0.20206mm；│ InRS41 │+│ InRS42 │=0.43967mm；│ InRS41 │/TP4=0.27232；And │ InRS42 │/TP4
=0.23158.Be conducive to eyeglass production and molding whereby, and effectively maintain its miniaturization.
In the optical imaging system of the present embodiment, the critical point C31 of the third lens object side 132 and the vertical range of optical axis
For HVT31, the critical point C32 of the third lens image side surface 134 and the vertical range of optical axis are HVT32, meet following condition:
HVT31=0mm；HVT32=1.1142mm.Whereby, facilitate the lens error correction of the peripheral vision of optical imaging system.
In the optical imaging system of the present embodiment, the critical point C41 of the 4th lens object side 142 and the vertical range of optical axis
For HVT41, the critical point C42 of the 4th lens image side surface 144 and the vertical range of optical axis are HVT42, meet following condition:
HVT41=0.5695mm；HVT42=1.3556mm；HVT41/HVT42=0.4201.It whereby, can effective modified off-axis visual field
Aberration.
The optical imaging system of the present embodiment its meet following condition: HVT42/HOI=0.4620.Whereby, facilitate light
Learn the lens error correction of the peripheral vision of imaging system.
The optical imaging system of the present embodiment its meet following condition: HVT42/HOS=0.3063.Whereby, facilitate light
Learn the lens error correction of the peripheral vision of imaging system.
In the optical imaging system of first embodiment, the abbe number of the first lens is NA1, the abbe number of the second lens
For NA2, the abbe number of the third lens is NA3, and the abbe number of the 4th lens is NA4, meets following condition: │ NA1-NA2
│=0；NA3/NA2=0.39921.Whereby, facilitate the amendment of optical imaging system color difference.
In the optical imaging system of first embodiment, optical imaging system in knot as when TV distortion be TDT, knot as when
Optical distortion is ODT, meets following condition: │ TDT │=0.4%；│ ODT │=2.5%.
Cooperate again referring to following table one and table two.
The asphericity coefficient of table two, first embodiment
Table one is the detailed structured data of first embodiment, and wherein the unit of radius of curvature, thickness, distance and focal length is
Mm, and surface 0-14 is sequentially indicated by the surface of object side to image side.Table two is the aspherical surface data in first embodiment, wherein k
Conical surface coefficient in table aspheric curve equation, A1-A20 then indicate each surface 1-20 rank asphericity coefficient.In addition, following
Each embodiment table is the schematic diagram and aberration curve figure of corresponding each embodiment, in table the definition of data all with first embodiment
Table one and table two definition it is identical, be not added repeat herein.
Second embodiment
A and Fig. 2 B referring to figure 2., wherein Fig. 2A is painted a kind of optical imaging system according to second embodiment of the invention
Schematic diagram, Fig. 2 B are sequentially spherical aberration, astigmatism and the optical distortion curve graph of the optical imaging system of second embodiment from left to right.
Fig. 2 C is the TV distortion curve of the optical imaging system of second embodiment.By Fig. 2A it is found that optical imaging system 20 is by object side
It sequentially include the first lens 210, aperture 200, the second lens 220, the third lens 230, the 4th lens 240, infrared ray to image side
Optical filter 270, imaging surface 280 and image sensing component 290.
First lens 210 have positive refracting power, and are plastic material, and object side 212 is convex surface, and image side surface 214 is
Concave surface, and be all aspherical, and its object side 212 and image side surface 214 all have a point of inflexion.
Second lens 220 have negative refracting power, and are plastic material, and object side 222 is convex surface, and image side surface 224 is
Concave surface, and be all aspherical, and its object side 222 has two points of inflexion.
The third lens 230 have positive refracting power, and are plastic material, and object side 232 is concave surface, and image side surface 234 is
Convex surface, and be all aspherical, and its image side surface 234 has two points of inflexion.
4th lens 240 have negative refracting power, and are plastic material, and object side 242 is convex surface, and image side surface 244 is
Concave surface, and be all aspherical, and its object side 242 has a point of inflexion with two points of inflexion and image side surface 244.
Infrared filter 270 is glass material, is set between the 4th lens 240 and imaging surface 280 and does not influence light
Learn the focal length of imaging system.
In the optical imaging system of second embodiment, the focal length of 220 to the 4th lens 240 of the second lens be respectively f2, f3,
F4 meets following condition: │ f2 │+│ f3 │=15.7857mm；│ f1 │+│ f4 │=5.6102mm；And │ f2 │+│ f3 │ > │ f1 │
+│f4│。
In the optical imaging system of second embodiment, the first lens 210, the third lens 230 are positive lens, individual burnt
Away from respectively f1 and f3, the focal length summation of the lens of all positive refracting powers of tool is Σ PP, meets following condition: Σ PP=f1
+f3.Whereby, the positive refracting power for facilitating suitably to distribute the first lens 210 is to other positive lens, to inhibit incident light traveling process
The generation of significant aberration.
In the optical imaging system of second embodiment, individual focal lengths of the second lens 220 and the 4th lens 240 are respectively f2
And f4, the focal length summation of the lens of all negative refracting powers of tool is Σ NP, meets following condition: Σ NP=f2+f4.Whereby,
Facilitate the appropriate negative refracting power for distributing the 4th lens 240 to other negative lenses.
It please cooperate referring to following table three and table four.
The asphericity coefficient of table four, second embodiment
In second embodiment, aspherical fitting equation indicates the form such as first embodiment.In addition, following table parameter
Definition is all identical with the first embodiment, and not in this to go forth.
Following condition formulae numerical value can be obtained according to table three and table four:
Following condition formulae numerical value can be obtained according to table three and table four:
3rd embodiment
A and Fig. 3 B referring to figure 3., wherein Fig. 3 A is painted a kind of optical imaging system according to third embodiment of the invention
Schematic diagram, Fig. 3 B are sequentially spherical aberration, astigmatism and the optical distortion curve graph of the optical imaging system of 3rd embodiment from left to right.
Fig. 3 C is the TV distortion curve of the optical imaging system of 3rd embodiment.By Fig. 3 A it is found that optical imaging system 30 is by object side
It sequentially include the first lens 310, aperture 300, the second lens 320, the third lens 330, the 4th lens 340, infrared ray to image side
Optical filter 370, imaging surface 380 and image sensing component 390.
First lens 310 have positive refracting power, and are plastic material, and object side 312 is convex surface, and image side surface 314 is
Convex surface, and be all aspherical, object side 312, object side 312 has a point of inflexion.
Second lens 320 have negative refracting power, and are plastic material, and object side 322 is concave surface, and image side surface 324 is
Concave surface, and be all it is aspherical, object side 322 have four points of inflexion.
The third lens 330 have positive refracting power, and are plastic material, and object side 332 is concave surface, and image side surface 334 is
Convex surface, and be all it is aspherical, image side surface 334 have two points of inflexion.
4th lens 340 have negative refracting power, and are plastic material, and object side 342 is convex surface, and image side surface 344 is
Concave surface, and be all aspherical, and its object side 342 has a point of inflexion with two points of inflexion and image side surface 344.
Infrared filter 370 is glass material, is set between the 4th lens 340 and imaging surface 380 and does not influence light
Learn the focal length of imaging system.
In the optical imaging system of 3rd embodiment, the focal length of 320 to the 4th lens 340 of the second lens be respectively f2, f3,
F4 meets following condition: │ f2 │+│ f3 │=7.7448mm；│ f1 │+│ f4 │=4.2836mm；And │ f2 │+│ f3 │ > │ f1 │+
│f4│。
In the optical imaging system of 3rd embodiment, the focal length summation of the lens of all positive refracting powers of tool is Σ PP, is expired
Foot column condition: Σ PP=f1+f3.Whereby, the positive refracting power for facilitating suitably to distribute the first lens 310 to other positive lens,
To inhibit the generation of the significant aberration of incident ray traveling process.
In the optical imaging system of 3rd embodiment, the focal length summation of the lens of all negative refracting powers of tool is Σ NP, is expired
Foot column condition: Σ NP=f2+4.Whereby, facilitate the appropriate negative refracting power for distributing the 4th lens 340 to other negative lenses.
It please cooperate referring to following table five and table six.
The asphericity coefficient of table six, 3rd embodiment
In 3rd embodiment, aspherical fitting equation indicates the form such as first embodiment.In addition, following table parameter
Definition is all identical with the first embodiment, and not in this to go forth.
Following condition formulae numerical value can be obtained according to table five and table six:
Following condition formulae numerical value can be obtained according to table five and table six:
Fourth embodiment
A and Fig. 4 B referring to figure 4., wherein Fig. 4 A is painted a kind of optical imaging system according to fourth embodiment of the invention
Schematic diagram, Fig. 4 B are sequentially spherical aberration, astigmatism and the optical distortion curve graph of the optical imaging system of fourth embodiment from left to right.
Fig. 4 C is the TV distortion curve of the optical imaging system of fourth embodiment.By Fig. 4 A it is found that optical imaging system 40 is by object side
It sequentially include the first lens 410, aperture 400, the second lens 420, the third lens 430, the 4th lens 440, infrared ray to image side
Optical filter 470, imaging surface 480 and image sensing component 490.
First lens 410 have positive refracting power, and are plastic material, and object side 412 is convex surface, and image side surface 414 is
Convex surface, and be all aspherical, and its object side 412 has a point of inflexion.
Second lens 420 have negative refracting power, and are plastic material, and object side 422 is convex surface, and image side surface 424 is
Concave surface, and be all aspherical, and its object side 422 has two points of inflexion.
The third lens 430 have positive refracting power, and are plastic material, and object side 432 is concave surface, and image side surface 434 is
Convex surface, and be all aspherical, and its image side surface 434 has two points of inflexion.
4th lens 440 have negative refracting power, and are plastic material, and object side 442 is convex surface, and image side surface 444 is
Concave surface, and be all aspherical, and its object side 442 has a point of inflexion with three points of inflexion and image side surface 444.
Infrared filter 470 is glass material, is set between the 4th lens 440 and imaging surface 480 and does not influence light
Learn the focal length of imaging system.
In the optical imaging system of fourth embodiment, the focal length of 420 to the 4th lens 440 of the second lens be respectively f2, f3,
F4 meets following condition: │ f2 │+│ f3 │=9.8117mm；│ f1 │+│ f4 │=4.5239mm；And │ f2 │+│ f3 │ > │ f1 │+
│f4│。
In the optical imaging system of fourth embodiment, the focal length summation of the lens of all positive refracting powers of tool is Σ PP, is expired
Foot column condition: Σ PP=f1+f3.Whereby, the positive refracting power for facilitating suitably to distribute the first lens 410 to other positive lens,
To inhibit the generation of the significant aberration of incident ray traveling process.
In the optical imaging system of fourth embodiment, the focal length summation of the lens of all negative refracting powers of tool is Σ NP, is expired
Foot column condition: Σ NP=f2+f4.Whereby, facilitate the appropriate negative refracting power for distributing the 4th lens 440 to other negative lenses.
It please cooperate referring to following table seven and table eight.
The asphericity coefficient of table eight, fourth embodiment
In fourth embodiment, aspherical fitting equation indicates the form such as first embodiment.In addition, following table parameter
Definition is all identical with the first embodiment, and not in this to go forth.
Following condition formulae numerical value can be obtained according to table seven and table eight:
Following condition formulae numerical value can be obtained according to table seven and table eight:
5th embodiment
A and Fig. 5 B referring to figure 5., wherein Fig. 5 A is painted a kind of optical imaging system according to fifth embodiment of the invention
Schematic diagram, Fig. 5 B are sequentially spherical aberration, astigmatism and the optical distortion curve graph of the optical imaging system of the 5th embodiment from left to right.
Fig. 5 C is the TV distortion curve of the optical imaging system of the 5th embodiment.By Fig. 5 A it is found that optical imaging system 50 is by object side
It sequentially include the first lens 510, aperture 500, the second lens 520, the third lens 530, the 4th lens 540, infrared ray to image side
Optical filter 570, imaging surface 580 and image sensing component 590.
First lens 510 have positive refracting power, and are plastic material, and object side 512 is convex surface, and image side surface 514 is
Convex surface, and be all it is aspherical, object side 512 have a point of inflexion.
Second lens 520 have negative refracting power, and are plastic material, and object side 522 is convex surface, and image side surface 524 is
Concave surface, and be all aspherical, and its object side 522 has two points of inflexion.
The third lens 530 have positive refracting power, and are plastic material, and object side 532 is concave surface, and image side surface 534 is
Convex surface, and be all aspherical, and its image side surface 534 has two points of inflexion.
4th lens 540 have negative refracting power, and are plastic material, and object side 542 is convex surface, and image side surface 544 is
Concave surface, and be all aspherical, and its object side 542 has a point of inflexion with three points of inflexion and image side surface 544.
Infrared filter 570 is glass material, is set between the 4th lens 540 and imaging surface 580 and does not influence light
Learn the focal length of imaging system.
In the optical imaging system of 5th embodiment, the focal length of 520 to the 4th lens 540 of the second lens be respectively f2, f3,
F4 meets following condition: │ f2 │+│ f3 │=10.1202mm；│ f1 │+│ f4 │=4.7004mm；And │ f2 │+│ f3 │ > │ f1 │
+│f4│。
In the optical imaging system of 5th embodiment, the focal length summation of the lens of all positive refracting powers of tool is Σ PP, is expired
Foot column condition: Σ PP=f1+f3.Whereby, the positive refracting power for facilitating suitably to distribute the first lens 510 to other positive lens,
To inhibit the generation of the significant aberration of incident ray traveling process.
In the optical imaging system of 5th embodiment, the focal length summation of the lens of all negative refracting powers of tool is Σ NP, is expired
Foot column condition: Σ NP=f2+f4.Whereby, facilitate the appropriate negative refracting power for distributing the 4th lens 540 to other negative lenses.
It please cooperate referring to following table nine and table ten.
The asphericity coefficient of table ten, the 5th embodiment
In 5th embodiment, aspherical fitting equation indicates the form such as first embodiment.In addition, following table parameter
Definition is all identical with the first embodiment, and not in this to go forth.
Following condition formulae numerical value can be obtained according to table nine and table ten:
Following condition formulae numerical value can be obtained according to table nine and table ten:
Sixth embodiment
Please refer to Fig. 6 A and Fig. 6 B, wherein Fig. 6 A is painted a kind of optical imaging system according to sixth embodiment of the invention
Schematic diagram, Fig. 6 B are sequentially spherical aberration, astigmatism and the optical distortion curve graph of the optical imaging system of sixth embodiment from left to right.
Fig. 6 C is the TV distortion curve of the optical imaging system of sixth embodiment.By Fig. 6 A it is found that optical imaging system 60 is by object side
It sequentially include the first lens 610, aperture 600, the second lens 620, the third lens 630, the 4th lens 640, infrared ray to image side
Optical filter 670, imaging surface 680 and image sensing component 690.
First lens 610 have positive refracting power, and are plastic material, and object side 612 is convex surface, and image side surface 614 is
Convex surface, and be all aspherical, and its object side 612 has a point of inflexion.
Second lens 620 have positive refracting power, and are plastic material, and object side 622 is convex surface, and image side surface 624 is
Concave surface, and be all aspherical, and its object side 622 has two points of inflexion.
The third lens 630 have negative refracting power, and are plastic material, and object side 632 is concave surface, and image side surface 634 is
Convex surface, and be all aspherical, and its image side surface 634 has two points of inflexion.
4th lens 640 have positive refracting power, and are plastic material, and object side 642 is convex surface, and image side surface 644 is
Concave surface, and be all aspherical, and its object side 642 has a point of inflexion with three points of inflexion and image side surface 644.
Infrared filter 670 is glass material, is set between the 4th lens 640 and imaging surface 680 and does not influence light
Learn the focal length of imaging system.
In the optical imaging system of sixth embodiment, the focal length of 620 to the 4th lens 640 of the second lens be respectively f2, f3,
F4 meets following condition: │ f2 │+│ f3 │=10.1424mm；│ f1 │+│ f4 │=4.7155mm；And │ f2 │+│ f3 │ < │ f1 │
+│f4│。
In the optical imaging system of sixth embodiment, the focal length summation of the lens of all positive refracting powers of tool is Σ PP, is expired
Foot column condition: Σ PP=f1+f3.Whereby, the positive refracting power for facilitating suitably to distribute the first lens 610 to other positive lens,
To inhibit the generation of the significant aberration of incident ray traveling process.
In the optical imaging system of sixth embodiment, the focal length summation of the lens of all negative refracting powers of tool is Σ NP, is expired
Foot column condition: Σ NP=f2+f4.Whereby, facilitate the appropriate negative refracting power for distributing the 4th lens to other negative lenses.
It please cooperate referring to following table 11 and table 12.
The asphericity coefficient of table 12, sixth embodiment
In sixth embodiment, aspherical fitting equation indicates the form such as first embodiment.In addition, following table parameter
Definition is all identical with the first embodiment, and not in this to go forth.
Following condition formulae numerical value can be obtained according to table 11 and table 12:
Following condition formulae numerical value can be obtained according to table 11 and table 12:
Although the present invention is disclosed above with embodiment, however, it is not to limit the invention, any to be familiar with this skill
Person, without departing from the spirit and scope of the present invention, when can be used for a variety of modifications and variations, therefore protection scope of the present invention is worked as
Subject to appended claims institute defender.
It will be those skilled in the art although the present invention is particularly shown with reference to its exemplary embodiments and describes
It will be understood by, it can be right under spirit and scope of the invention defined in appended claims and its equivalent in not departing from
It carries out the various changes in form and details.
Claims (24)
1. a kind of optical imaging system, which is characterized in that sequentially include by object side to image side:
First lens have positive refracting power；
Second lens have refracting power；
The third lens have refracting power；
4th lens have refracting power；And
Imaging surface；
It is that at least each of two lens are saturating in four pieces and the lens that wherein the optical imaging system, which has the lens of refracting power,
An at least surface for mirror has an at least point of inflexion, and second lens at least lens into the 4th lens, which have, just bends
Roll over power, and the object side surface of the 4th lens and image side surface be all it is aspherical, first lens to the described 4th thoroughly
The focal length of mirror is respectively f1, f2, f3, f4, and the focal length of the optical imaging system is f, the entrance pupil of the optical imaging system
Diameter is HEP, the first lens object side to the imaging surface on optical axis have a distance HOS, the first lens object
To the 4th lens image side surface in having a distance InTL on optical axis, first lens to the 4th lens are distinguished for side
Object side surface in the intersection point on optical axis to first lens to the 4th lens respectively object side surface maximum effectively
Radial location is InRSO, first lens to the 4th lens point in the absolute value summation of the horizontal displacement distance of optical axis
The maximum on image side surface of other image side surface in the intersection point on optical axis to first lens to the 4th lens respectively has
Effect radial location is Σ │ in the summation that the absolute value summation of the horizontal displacement distance of optical axis is InRSI, InRSO and InRSI
InRS │, wherein further include aperture, in aperture described on optical axis to the imaging surface in having a distance InS, the light on optical axis
It learns imaging system and is equipped with image sensing component and 8,000,000 pixels, the image sensing group in the imaging surface and are at least set
The half of the effective sensing region diagonal line length of part is HOI, meets following condition: 1.2≤f/HEP≤6.0；0.5≦HOS/f≦
4.45/3.4817；0<Σ│InRS│/InTL≦3；0.5≦InS/HOS≦1.2；And HOI > 2.3mm.
2. optical imaging system as described in claim 1, which is characterized in that the optical imaging system in knot as when TV it is abnormal
Become TDT, the optical imaging system in knot as when optical distortion be ODT, the visible angle of the optical imaging system
Half is HAF, meets following equation: 0deg < HAF≤70deg；│ TDT │ < 60% and │ ODT │ < 50%.
3. optical imaging system as described in claim 1, which is characterized in that the third lens and the 4th lens
An at least surface for each lens has at least one point of inflexion.
4. optical imaging system as claimed in claim 3, which is characterized in that any surface of the 4th lens all have to
Few point of inflexion.
5. optical imaging system as claimed in claim 3, which is characterized in that first lens and second lens
An at least surface for each lens has at least one point of inflexion.
6. optical imaging system as described in claim 1, which is characterized in that the vertical range between the point of inflexion and optical axis is
HIF meets following equation: 0mm < HIF≤5mm.
7. optical imaging system as described in claim 1, which is characterized in that the 4th lens are negative refracting power.
8. optical imaging system as described in claim 1, which is characterized in that the first lens object side to the described 4th is thoroughly
Mirror image side and meets following equation: 0.5≤InTL/HOS≤0.9 in having a distance InTL on optical axis.
9. optical imaging system as claimed in claim 5, which is characterized in that the vertical range between the point of inflexion and optical axis is
HIF meets following relationship: 0 < HIF/HOI≤0.9.
10. a kind of optical imaging system, which is characterized in that sequentially include by object side to image side:
First lens have positive refracting power；
Second lens have refracting power；
The third lens have refracting power；
4th lens have refracting power；And
Imaging surface；
It is that at least each of two lens are saturating in four pieces and the lens that wherein the optical imaging system, which has the lens of refracting power,
An at least surface for mirror has an at least point of inflexion, and second lens at least lens into the 4th lens, which have, just bends
Roll over power, and the object side surface of the 4th lens and image side surface be all it is aspherical, first lens to the described 4th thoroughly
The focal length of mirror is respectively f1, f2, f3, f4, and the focal length of the optical imaging system is f, the entrance pupil of the optical imaging system
Diameter is HEP, the first lens object side to the imaging surface on optical axis have a distance HOS, the first lens object
To the 4th lens image side surface in having a distance InTL on optical axis, first lens to the 4th lens are distinguished for side
Object side surface in the intersection point on optical axis to the lens respectively object side surface maximum effective radius position in the water of optical axis
The absolute value summation of flat shift length is InRSO, and the image side surface of first lens to the 4th lens respectively is in optical axis
On intersection point to first lens to the 4th lens respectively image side surface maximum effective radius position in optical axis
The absolute value summation of horizontal displacement distance is that the summation of InRSI, InRSO and InRSI are Σ │ InRS │, wherein further including light
Circle, in aperture described on optical axis to the imaging surface in having a distance InS on optical axis, the optical imaging system is equipped with image
8,000,000 pixels in the imaging surface and are at least arranged in sensing component, and the effective sensing region of image sensing component is diagonal
The half of wire length is HOI, meets following condition: 1.2≤f/HEP≤3.0；0.5≦HOS/f≦4.45/3.4817；0<Σ│
InRS│/InTL≦3；0.5≦InS/HOS≦1.2；And HOI > 2.3mm.
11. optical imaging system as claimed in claim 10, which is characterized in that the third lens and the 4th lens
Each lens an at least surface have at least one point of inflexion.
12. optical imaging system as claimed in claim 10, which is characterized in that first lens and second lens
Each lens an at least surface have at least one point of inflexion.
13. optical imaging system as claimed in claim 10, which is characterized in that the optical imaging system meets following public affairs
Formula: 0mm < HOS≤7mm.
14. optical imaging system as claimed in claim 10, which is characterized in that first lens and second lens it
Between in the distance on optical axis be IN12, and meet following equation: 0 < IN12/f≤0.2.
15. optical imaging system as claimed in claim 10, which is characterized in that the third lens and the 4th lens it
Between in the distance on optical axis be IN34, and meet following equation: 0 < IN34/f≤0.2.
16. optical imaging system as claimed in claim 10, which is characterized in that the third lens on optical axis with a thickness of
TP3, and meet following equation: 0 < TP3/f≤0.2.
17. optical imaging system as claimed in claim 10, which is characterized in that the third lens object side surface is on optical axis
Intersection point to the third lens object side surface maximum effective radius position in optical axis horizontal displacement distance be InRS31, institute
The third lens image side surface is stated in the maximum effective radius position of the intersection point on optical axis to the third lens image side surface in light
The horizontal displacement distance of axis is InRS32, and the 4th lens object side surface is in the intersection point on optical axis to the 4th lens object side
The maximum effective radius position on surface is InRS41 in the horizontal displacement distance of optical axis, and the 4th lens image side surface is in optical axis
On intersection point to the 4th lens image side surface maximum effective radius position in optical axis horizontal displacement distance be InRS42,
It meets following condition: 0 < (│ InRS31 │+│ InRS32 │+│ InRS41 │+│ InRS42 │)/InTL≤2.
18. optical imaging system as claimed in claim 10, which is characterized in that second lens and the third lens in
Thickness on optical axis is respectively TP2 and TP3, and second lens are at a distance from optical axis between the third lens
IN23 meets following condition: ()≤0.5 TP2+IN23+TP3 0.01 < IN23/.
19. optical imaging system as claimed in claim 10, which is characterized in that first lens to the 4th lens
Focal length is respectively f1, f2, f3, f4, and the optical imaging system meets following condition: │≤2 0 < │ f/f1；0<│f/f2│≦2；0<
│f/f3│≦2；And │≤3 0 < │ f/f4.
20. a kind of optical imaging system, which is characterized in that sequentially include by object side to image side:
First lens have positive refracting power；
Second lens have negative refracting power；
The third lens have refracting power, and at least one side has at least one point of inflexion in object side surface and image side surface；
4th lens have refracting power, and at least one side has at least one point of inflexion in object side surface and image side surface；With
And
Imaging surface；
It is four pieces that wherein the optical imaging system, which has the lens of refracting power, and the object side surface of the 4th lens and picture
Side surface be all it is aspherical, in first lens and second lens an at least surface for an at least lens have at least
One point of inflexion, the focal length of first lens to the 4th lens are respectively f1, f2, f3, f4, the optical imaging system
Focal length be f, the entrance pupil diameter of the optical imaging system is HEP, the half at the maximum visual angle of the optical imaging system
For HAF, the first lens object side to the imaging surface is in having a distance HOS, the first lens object side on optical axis
To the 4th lens image side surface on optical axis have a distance InTL, the optical imaging system in knot as when optical distortion
For ODT and TV distortion be TDT, first lens to the 4th lens respectively object side surface in the intersection point on optical axis extremely
First lens to the 4th lens respectively object side surface maximum effective radius position in optical axis horizontal displacement away from
From absolute value summation be InRSO, first lens to the 4th lens respectively image side surface in the intersection point on optical axis
The maximum effective radius position on the image side surface to first lens to the 4th lens respectively is in the horizontal displacement of optical axis
The absolute value summation of distance is that the summation of InRSI, InRSO and InRSI are Σ │ InRS │, wherein aperture is further included, in optical axis
For the upper aperture to the imaging surface in having a distance InS on optical axis, the optical imaging system is equipped with image sensing component
8,000,000 pixels in the imaging surface and are at least set, the half of the effective sensing region diagonal line length of image sensing component
Number is HOI, meets following condition: 1.2≤f/HEP≤3.0；0.4≦│tan(HAF)│≦3.0；0.5≦HOS/f≦4.45/
3.4817；│ TDT │ < 60%；│ ODT │≤50%；0<Σ│InRS│/InTL≦3；0.5≦InS/HOS≦1.2；And HOI >
2.3mm。
21. optical imaging system as claimed in claim 20, which is characterized in that the vertical range between the point of inflexion and optical axis
For HIF, meet following equation: 0mm < HIF≤5mm.
22. optical imaging system as claimed in claim 21, which is characterized in that the focal length f of the optical imaging system and every
The ratio f/fp of each of a piece of focal length fp of lens with positive refracting power be PPR, the focal length f of the optical imaging system with
Ratio f/fn each of per a piece of focal length fn of lens with negative refracting power is NPR, the PPR of the lens of all positive refracting powers
Summation is Σ PPR, and the NPR summation of the lens of all negative refracting powers is Σ NPR, meets following condition: 0.5≤Σ PPR/ │ Σ
NPR│≦4.5。
23. optical imaging system as claimed in claim 20, which is characterized in that first lens and the second lens are in light
Thickness on axis is respectively TP1, TP2, meets following condition: 0 < TP1/TP2≤10.
24. optical imaging system as claimed in claim 23, which is characterized in that the third lens and the 4th lens are in light
Thickness on axis is respectively TP3 and TP4, meets following condition: 0 < TP3/TP4≤10.
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|---|---|---|---|
| TW104112456 | 2015-04-17 | ||
| TW104112456A TWI563310B (en) | 2015-04-17 | 2015-04-17 | Optical image capturing system |
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| CN106054352B true CN106054352B (en) | 2019-01-08 |
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| TWI580997B (en) * | 2015-05-15 | 2017-05-01 | 先進光電科技股份有限公司 | Optical image capturing system |
| TWI580996B (en) * | 2015-05-15 | 2017-05-01 | 先進光電科技股份有限公司 | Optical image capturing system |
| TWI679444B (en) * | 2016-04-22 | 2019-12-11 | 先進光電科技股份有限公司 | Optical image capturing system |
| TWI612356B (en) * | 2016-04-22 | 2018-01-21 | 先進光電科技股份有限公司 | Optical image capturing system |
| TWI631364B (en) * | 2016-11-03 | 2018-08-01 | 先進光電科技股份有限公司 | Optical image capturing system |
| TWI631365B (en) * | 2016-11-03 | 2018-08-01 | 先進光電科技股份有限公司 | Optical image capturing system |
| TWI638199B (en) * | 2017-01-04 | 2018-10-11 | 先進光電科技股份有限公司 | Optical image capturing system |
| TWI636293B (en) * | 2017-01-04 | 2018-09-21 | 先進光電科技股份有限公司 | Optical image capturing system |
| TWI645214B (en) * | 2017-01-04 | 2018-12-21 | 先進光電科技股份有限公司 | Optical image capturing system |
| TWI638200B (en) * | 2017-01-04 | 2018-10-11 | 先進光電科技股份有限公司 | Optical image capturing system |
| TWI713839B (en) * | 2018-05-01 | 2020-12-21 | 先進光電科技股份有限公司 | Optical image capturing system |
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| TW201211614A (en) * | 2010-09-10 | 2012-03-16 | Genius Electronic Optical Co Ltd | Imaging lens composed of four lenses and electronic device using the same |
| TWI436092B (en) * | 2011-09-20 | 2014-05-01 | Largan Precision Co Ltd | Imaging lens system |
| TWI440881B (en) * | 2011-12-14 | 2014-06-11 | Largan Precision Co Ltd | Optical image capturing lens system |
| WO2013111612A1 (en) * | 2012-01-25 | 2013-08-01 | コニカミノルタアドバンストレイヤー株式会社 | Image pickup lens |
| TWI461732B (en) * | 2012-11-09 | 2014-11-21 | Largan Precision Co Ltd | Image capturing system lens assembly |
| KR101425793B1 (en) * | 2012-12-31 | 2014-08-06 | 주식회사 코렌 | Photographic lens optical system |
| JP2014142554A (en) * | 2013-01-25 | 2014-08-07 | Digitaloptics Corp | Imaging optical system and imaging apparatus having the same |
| JP2014153574A (en) * | 2013-02-08 | 2014-08-25 | Konica Minolta Inc | Imaging lens, and imaging device and portable terminal |
| JP6171184B2 (en) * | 2013-08-09 | 2017-08-02 | カンタツ株式会社 | Imaging lens |
| TWI546564B (en) * | 2015-02-16 | 2016-08-21 | 先進光電科技股份有限公司 | Optical image capturing system |
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| US20160306138A1 (en) | 2016-10-20 |
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